CN102922988A - Fuel feeder for engine - Google Patents

Fuel feeder for engine Download PDF

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Publication number
CN102922988A
CN102922988A CN2012104285487A CN201210428548A CN102922988A CN 102922988 A CN102922988 A CN 102922988A CN 2012104285487 A CN2012104285487 A CN 2012104285487A CN 201210428548 A CN201210428548 A CN 201210428548A CN 102922988 A CN102922988 A CN 102922988A
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CN
China
Prior art keywords
fuel tank
fuel
main
main fuel
secondary fuel
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Pending
Application number
CN2012104285487A
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Chinese (zh)
Inventor
上田稔
洼田俊行
国府志朗
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of CN102922988A publication Critical patent/CN102922988A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

In a vehicle having a sub fuel tank 84 for storing a sub fuel 96 as a starting fuel to enhancing the startability in addition to a main fuel tank 33 of a vehicular engine 12, the sub fuel tank 84 is arranged in the main fuel tank 33 and any space for arranging the sub fuel tank is newly provided in a vehicle body. More specifically, the sub fuel tank 84 is arranged on a swollen part on one side having no fuel cock out of right and left swollen pars of the saddle-shaped main fuel tank 33.

Description

Fuel feed device for engine
The application be that January 29, application number in 2008 are 200810009230.9 the applying date, denomination of invention divides an application for the application for a patent for invention of " fuel feed device for engine ".
Technical field
The present invention relates to the improvement of fuel feed device for engine.
Background technology
In recent years, bring into use fuel take alcohol as major component to derive from the gasoline of fossil fuel with replacement as vehicle fuel.Yet, because alcohol is lower than gasoline boiling point, so start the engine will difficult when low temperature.The startability of driving engine when improving low temperature is only used gasoline or is rich in the alcohol of gasoline when starting, store this startup and separate with main fuel tank with the secondary Fuel Tank of fuel and be arranged on the vehicle body.
As the available engine fuel supply system with described secondary Fuel Tank, known have at the front upper part of body shell configuration main fuel tank and dispose the structure (for example, with reference to patent documentation 1) of secondary Fuel Tank at the pars intermedia of body shell.
Patent documentation 1: Japanese kokai publication sho 57-164872 communique
Below by Fig. 1 patent documentation 1 is described.
Body shell A comprises: the head tube 1 that is arranged on front end; Supervisor 2 from from this head tube 1 to the extension of the oblique back lower place; The seat barre 4 that rearward extends from this supervisor's 2 pars intermedia; The backstay 5 that the pars intermedia of being connected with the seat barre for supervisor 2 bottom connects.Dispose main fuel tank 9 in the mode that strides across head tube 2 front portions, in the space 8 of the triangle that is surrounded by supervisor 1, seat barre 4 and backstay 5, secondary Fuel Tank 10 is set.
Except main fuel tank 9, also arranging in the situation of secondary Fuel Tank 10, in the dillies such as two-wheeled motor vehicle, it is less that it arranges the space, then can make vehicle become large as not adding to be configured with improvement, how to prevent that therefore the vehicle maximization from just becoming a problem that will solve.
Summary of the invention
The object of the invention is to realize have the miniaturization of the vehicle of main fuel tank and secondary Fuel Tank.
The 1st technical scheme of the present invention is: in a kind of vehicle, except the main fuel tank with mobile engine, also have the secondary Fuel Tank that the startup that is used for the raising startability is got up with fuel conservation, wherein, secondary Fuel Tank is configured in the main fuel tank.
Its role is to, owing in existing main fuel tank, dispose secondary Fuel Tank, do not need to be provided in addition disposing the interior space of vehicle body of secondary Fuel Tank.Can problematic fuel if store respectively when mixing also not at main fuel tank and secondary Fuel Tank, though on the structure not exclusively separation also can, thereby can just can realize purpose of the present invention with simple structure.
In the 2nd technical scheme of the present invention, the oil-feed port of secondary Fuel Tank is arranged on the inboard of the oil-feed port of main fuel tank.
Its role is to, because the oil-feed port of secondary Fuel Tank is configured in the inboard of the oil-feed port of main fuel tank, so can make simplifying the structure of part that the oil-feed port of main fuel tank and secondary Fuel Tank oil-feed port share, compare with the situation of the oil-feed port of secondary Fuel Tank with the oil-feed port that main fuel tank is set respectively independently, it is simple that structure becomes.
And, because the oil-feed port of the oil-feed port of main fuel tank and secondary Fuel Tank is close, so efficient uprised when main fuel and secondary fuel were provided continuously.
In the 3rd technical scheme of the present invention, be provided with the tegillum that the oil-feed port of secondary Fuel Tank is clogged in the inboard of the lid of the oil-feed port of main fuel tank.
Its role is to, when living the oil-feed port of main fuel tank with capping plug, also the oil-feed port of secondary Fuel Tank is clogged with tegillum simultaneously.And, when body inclination because tegillum and so that main fuel not with secondary fuel mix.
The 4th technical scheme of the present invention is: in a kind of vehicle, except the main fuel tank with engine for motorcycle, also has the secondary Fuel Tank that the startup that is used for the raising startability is got up with fuel storage, wherein, secondary Fuel Tank be configured near the vehicle front side the main fuel tank single ridge skeleton form main frame around.
Its role is to, by the secondary Fuel Tank of more close main fuel tank ground configuration, the maximization so that vehicle can not become.
In the 5th technical scheme of the present invention, the fuel distribution tube of drawing from secondary Fuel Tank extends the aspirator system that is connected to the below.
Its role is to, can make fuel distribution tube can not be configured to aspirator system from secondary Fuel Tank too agley.And, utilize the drop of secondary Fuel Tank and aspirator system can supply fuel to aspirator system.
In the 6th technical scheme of the present invention, be provided with at the fuel distribution tube of drawing from secondary Fuel Tank: the electromagnetic valve that the flowing time of fuel is controlled and only allow fuel from the boiler check valve of this electromagnetic valve side direction aspirator system side flow.
Its role is to, by opening and closing electromagnetic valve, controlling fuel is fuel feed by the flowing time that boiler check valve flows to aspirator system.By boiler check valve so that fuel can be from the aspirator system adverse current to secondary Fuel Tank side.
In the 7th technical scheme of the present invention, in the fuel distribution tube way, secondary petrolift is set, the ejection pressure of the main fuel pump that the ejection pressure ratio main fuel tank of this pair petrolift is used is high, and makes this pair petrolift be connected to the upstream side fuel passage that main fuel tank is used fuel injection valve by check valve.
Its role is to, because the ejection pressure of the ejection pressure ratio main fuel pump of secondary petrolift is high, so even main fuel pump is in the work, the secondary fuel in the secondary Fuel Tank also can be supplied to the upstream side fuel passage by fuel injection valve by main fuel tank.In the out-of-run situation of secondary petrolift, check valve can not flow in the secondary Fuel Tank main fuel of main fuel pump ejection.
In the 1st technical scheme of the present invention, owing in main fuel tank, dispose secondary Fuel Tank, can effectively utilize the space in the main fuel tank.And the structure of main fuel tank and secondary Fuel Tank becomes simply, can prevent the maximization of vehicle.For example, if the bottom of one side disposes secondary Fuel Tank about main fuel tank, then can actv. utilize the dead angle of main fuel tank.
In the 2nd technical scheme of the present invention, disposed the oil-feed port of secondary Fuel Tank by the inboard at the oil-feed port of main fuel tank, can realize the simplification of oil-feed port structure.And, can make the oil-feed port of the oil-feed port of main fuel tank and secondary Fuel Tank close to each other, thereby carry out efficiently fuel feeding work.
In the 3rd technical scheme of the present invention, because the inboard at the lid of the oil-feed port of main fuel tank is provided with the tegillum that the oil-feed port of secondary Fuel Tank is clogged, so can easily carry out the switching of 2 oil-feed ports, and, with respect to the pasta change of body inclination etc., can prevent the interior fuel mix of fuel and secondary Fuel Tank in the main fuel tank.
In the 4th technical scheme of the present invention, secondary Fuel Tank be configured near the single ridge skeleton form main fuel tank, vehicle front side main frame around, therefore can dispose secondary Fuel Tank in more close main fuel tank ground, thereby can prevent the maximization of vehicle.
In the 5th technical scheme of the present invention, the fuel distribution tube of drawing from secondary Fuel Tank extends to the aspirator system of below and is attached thereto, and the fuel distribution tube of drawing from secondary Fuel Tank thus can be too crooked, can improve air flow property.And, owing to can utilize the drop of fuel, thus can easily supply fuel to aspirator system, to improve the startability of driving engine.
In the 6th technical scheme of the present invention, be provided with at the fuel distribution tube of drawing from secondary Fuel Tank: the electromagnetic valve that the flowing time of fuel is controlled and only allow fuel from the boiler check valve of this electromagnetic valve side direction aspirator system side flow, therefore can easily control the fuel feed that flows to aspirator system by electromagnetic valve.And, can prevent that by boiler check valve fuel is from aspirator system to secondary Fuel Tank side adverse current.
In the 7th technical scheme of the present invention, secondary petrolift is set in fuel distribution tube, the ejection pressure of the main fuel pump that the ejection pressure ratio main fuel tank of this pair petrolift is used is high, and makes this pair petrolift be connected to the upstream side fuel passage that main fuel tank is used fuel injection valve by check valve.Thus, can at main fuel tank side and secondary Fuel Tank side common fuel shooting valve, can realize cost by the minimizing of number of components.
Description of drawings
Fig. 1 is the lateral plan of the vehicle of employing fuel feed device for engine of the present invention.
Fig. 2 is the cutaway view of the 1st embodiment of expression fuel supply system of the present invention.
Fig. 3 is the sectional elevation (the 1st embodiment) of main fuel tank of the present invention.
Fig. 4 is the instruction diagram (the 1st embodiment) of the oil-feed port of main fuel tank of the present invention.
Fig. 5 is the cutaway view of the 2nd embodiment of expression fuel supply system of the present invention.
Fig. 6 is the instruction diagram (the 2nd embodiment, the 3rd is implemented ten thousand formulas) of expression boiler check valve of the present invention.
Fig. 7 is the cutaway view of the 4th embodiment of expression fuel supply system of the present invention.
Fig. 8 is the cutaway view of the 5th embodiment of expression fuel supply system of the present invention.
Fig. 9 is the instruction diagram (the 6th embodiment and the 7th embodiment) of the configuration of expression secondary Fuel Tank of the present invention.
Figure 10 is the cutaway view of the 8th embodiment of fuel supply system of the present invention.
Figure 11 is the cutaway view of the 9th embodiment of fuel supply system of the present invention.
Figure 12 is the cutaway view of the 10th embodiment of fuel supply system of the present invention.
Figure 13 is the cutaway view of the 11st embodiment of fuel supply system of the present invention.
Figure 14 is the cutaway view of the 12nd embodiment of fuel supply system of the present invention.
The explanation of Reference numeral:
10... vehicle
12... driving engine
33,151,155,161... main fuel tank
82,94... petrolift
83... the oil-feed port of main fuel tank
84,152,156, the secondary Fuel Tank of 171...
96... start with fuel (secondary fuel)
91... fuel injection valve
98,131,172... fuel distribution tube (fuel feed pipe)
106... the oil-feed port of secondary Fuel Tank
128... tegillum (little cap)
132... electromagnetic valve
133... boiler check valve
146... check valve
The specific embodiment
Below in conjunction with accompanying drawing preferred implementation of the present invention is described.And the direction of Reference numeral is the direction of watching accompanying drawing.
Fig. 1 is the lateral plan that has adopted the vehicle behind the fuel feed device for engine of the present invention.Vehicle 10 is two-wheeled motor vehicle, and at the central portion configuration driving engine 12 of body shell 11, front fork 13 is supported in the front end of body shell 11 steerably, and back vent 14 can be supported in the rear lower of body shell 11 with swinging up and down.Use the blended oil of alcohol or gasoline and alcohol as main fuel, when making engine starting, for example, the gasoline that only uses when the low engine startability of temperature is bad or the blended oil (but the mixture ratio of gasoline is than height of main fuel) of gasoline and alcohol are as secondary fuel.
Body shell 11 is made of following part: the head tube 21 that is arranged on the front side; The main frame 22 that rearward extends from this head tube 21; The central frame 23 of extending downwards from the pars intermedia of this main frame 22; The subframe 24 that is connected with the bottom of the rear portion of main frame 22 and central frame 23 respectively; With the underframe 26 that extends to the oblique back lower place from head tube 21.Body shell 11 is the architectural components that are combined into by a plurality of press-formed parts.
Head tube 21 is parts that front fork 13 rotatably is installed, and shaft-like handle 31 is installed on the top of front fork 13, in the bottom of front fork 13 front-wheel 32 is installed.
Front portion at main frame 22 is equipped with main fuel tank 33 across ground, and cushion 34 is installed at the rear portion.
The inside of main fuel tank 33 is provided with the secondary Fuel Tank of describing in detail later.
Central frame 23 is the parts with underframe 26 supporting engines 12, and the pivot 36 that is arranged on the central frame 23 is the oscillating axle of back vent 14.In the rear end of back vent 14 trailing wheel 35 is installed.
Rear buffer cell 37 builts are installed on the rear portion of the rear portion of back vent 14 and main frame 22.
Underframe 26 is the parts by carriage 38 supporting engines 12.
Be provided with integratedly change-speed box 41 at driving engine 12 rear portions, be provided with cylinder head 44 in the cylinder section 43 of extending upward, be connected with aspirator system 46 at the rear portion of this cylinder head 44, be connected with exhaust gear 47 in the front portion of cylinder head 44.
Aspirator system 46 is made of following part: the aspirate tube 51 that an end is connected with cylinder head 44; The throttle valve body 52 that one end is connected with the other end of this aspirate tube 51; And the air filter 54 that is connected with the other end of this throttle valve body 52 by connection pipe 53.
Exhaust gear 47 is connected with the front portion of cylinder head 44 by an end and the freeing pipe 56 that then rearward extends downwards first from the place ahead of driving engine 12, be connected with the other end of this freeing pipe 56 and the silencer 57 of rearward extension consists of.
Mark 61 among the figure is front hood, and 62 is headlight, and 63 is front fender apron, 64 for covering the side cover of air filter 54 sides, 66 is rear side cover, and 67 is rear mudguard, and 68 is taillight, 71 is main support, 72 is the output shaft of change- speed box 41, and 73 for being installed on the drive sprocket on the output shaft 72, and 74 are integrated the driven sprocket that is installed on trailing wheel 35,76 for hanging over the chain on drive sprocket 73 and the driven sprocket 74, and 77 is chain cover.
Fig. 2 is the cutaway view of the 1st embodiment of expression fuel supply system of the present invention.Main fuel tank 33 has petrolift 82, and petrolift 82 81 rear portion is installed with the form of upwards holding up in the bottom, and main fuel tank 33 is saddle type containers, in be provided with the secondary Fuel Tank 84 of tubular that extends from oil-feed port 83 downwards, main fuel tank 33 is used for storage main fuel 86.And, mark 87 be main fuel tank 33 about central authorities the bottom.
Main fuel pump 82 is connected with fuel injection valve 91 on being installed on throttle valve body 52 by fuel feed pipe 88.And mark 92 is the flow regulating valve in throttle valve body 52 interior settings.
Secondary Fuel Tank 84 is used for storing secondary fuel 96 for 93 containers with petrolift 94 in the bottom.Petrolift 94 is connected with fuel injection valve 97 on being installed on throttle valve body 52 by fuel feed pipe 98.
Fig. 3 is the sectional elevation (the 1st embodiment) of the main fuel tank among the present invention.The both sides of the bottom 87 of central authorities are formed with left bellying 101 and the right bellying 102 that bloats downwards about main fuel tank 33, they can store respectively main fuel 86 independently when the residual of the main fuel 86 in main fuel tank 33 reduced, and in the bottom of left bellying 101 fuel cock 104 is set, main fuel 86 in the left bellying 101 can use at last thus, because a small amount of main fuel 86 in the storage of the bottom of right bellying 102 can not be drawn, so become so-called " dead angle " (dead space) here.By at this right bellying 102 secondary Fuel Tank 84 being set, can effectively utilize the dead angle.
Fig. 4 (a), (b) are the instruction diagram (the 1st embodiment) of the oil-feed port of main fuel tank of the present invention.
(a) show the oil-feed port 83 of main fuel tank 33 (with reference to Fig. 2).Be provided with the oil-feed port 106 of secondary Fuel Tank 84 (with reference to Fig. 2) in the inboard of oil-feed port 83.
Oil-feed port 83 has: the elliptoid outer edge 111 that fore-and-aft direction is long; The oil supplying hole 112 of main fuel tank 33 usefulness of offering in the inboard of this outer edge 111 and the oil supplying hole 113 of secondary Fuel Tank 84 usefulness.And mark 115 is the diapire around the oil supplying hole 112, and 116 is the diapire around the oil supplying hole 113.
The oil-feed port 106 of secondary Fuel Tank 84 is made of oil supplying hole 113.
" REG " expression regular-grade gasoline among the figure, " ALC " represents alcohol.
As mentioned above, owing to be provided with two oil-feed ports, so can improve ease of use.
(b) for being equivalent to the cutaway view along the b-b line of (a), at oil-feed port 83 cover cap 118 is installed.
The upper surface 112a of oil supplying hole 112 is positioned at the position higher than diapire 115, and the upper surface 113a of oil supplying hole 113 is positioned at the position higher than diapire 116, and diapire 116 is positioned at the position higher than diapire 115.By each height of such setting, can discharge with flexible pipe 121 by the discharge that is arranged on diapire 115 from the main fuel that oil supplying hole 112,113 overflows.
Cover cap 118 by outer board 124 and outside this rubber 126 of the installed inside of board 124 consist of, and have: the annulus 127 chimeric with the inside face 111a of the outer edge 111 of oil-feed port 83, clog the large cap 128 of oil supplying hole 112, and the tegillum section 129 that clogs oil supplying hole 113.And mark 113b is be used to making secondary fuel 96 in the secondary Fuel Tank 84 flow to discharge orifice in the main fuel tank 33 when overflowing.
(c) be the sectional elevation of main fuel tank 201 of the variation that shows secondary Fuel Tank 202, and show the situation that top in the main fuel tank 201 of saddle type has disposed secondary Fuel Tank 202.
Secondary Fuel Tank 202 size on the vehicle-width direction is large.Thereby when even vehicle body tilts, secondary fuel 96 also is easy to stay the left or right of secondary Fuel Tank 202.And mark 205 is for covering the cover cap of oil-feed port.
(d) want section's cutaway view for the oil-feed port 202a of the expression oil-feed port 201a of main fuel tank 201 and secondary Fuel Tank 202.The oil-feed port 201a of main fuel tank 201 is assisted cover cap 206 to clog, and the oil-feed port 202a of secondary Fuel Tank 202 is assisted cover cap 207 to clog, and these auxiliary cover caps 206,207 top are covered by cover cap 205.
Be provided with gap 202c between the box main body 202b that consists of secondary Fuel Tank 202 and oil-feed port 202a, in the process of secondary Fuel Tank 202 fuel feeding, the secondary fuel 96 that overflows from box main body 202b flows in the main fuel tank 201 by gap 202c.
Fig. 5 is the cutaway view of the 2nd embodiment of expression fuel supply system of the present invention.Connect the petrolift 82 of main fuel tank 33 and the fuel injection valve 91 of throttle valve body 52 sides with fuel feed pipe 88, with fuel feed pipe 131 auxiliary connection Fuel Tanks 84 inner and throttle valve bodys 52, flowing time to secondary fuel 96 is set in this fuel feed pipe 131 ways, is the electromagnetic valve 132 that fuel flow is controlled, in the end of throttle valve body 52 sides of fuel feed pipe 131 boiler check valve 133 is set.
When opening in electromagnetic valve 132 energisings, because between the secondary fuel 96 of secondary Fuel Tank 84 interior storages and the boiler check valve 133 drop H being arranged, secondary fuel 96 in the secondary Fuel Tank 84 can flow to boiler check valve 133, and boiler check valve 133 is so that this flowing can only be from secondary Fuel Tank 84 single flow direction throttle valve bodys 52.When engine starting, secondary fuel 96 is fed in the throttle valve body 52 from boiler check valve 133.
Fig. 6 (a)～(d) is the instruction diagram of expression boiler check valve of the present invention.
In (a), the boiler check valve 133 in the 2nd embodiment is made of valve casing 135 and valve body 136.Spherical, resinous valve body 136 is used for the tapered opening path 135a that is formed on these valve casing 135 1 ends is opened and closed.
The other end at valve casing 135 has a plurality of incision-like path 135b.In the figure, boiler check valve 133 is closed condition.
In (b), when secondary fuel was pressed arrow and flowed to throttle valve body 52 when opening electromagnetic valve 132, the valve body 136 of boiler check valve 133 was pushed open and is contacted with the other end of valve casing 135 by secondary fuel.The other end of valve casing 135 is provided with incision-like path 135b, and therefore secondary fuel flows in the throttle valve body 52 by incision-like path 135b.
(c), (d) is the instruction diagram of another embodiment (the 3rd embodiment) of expression boiler check valve.In (c), boiler check valve 141 is pilot valve, is made of thin plate springs 142, fixed parts 143 that throttle valve body 52 is fixed in the end of this thin plate springs 142.In the figure, boiler check valve 141 is closed condition.
In (d), when secondary fuel was pressed arrow and flowed to throttle valve body 52 when opening electromagnetic valve 132, the thin plate springs 142 of boiler check valve 141 was pushed open by secondary fuel and valve is opened, thereby secondary flow is in throttle valve body 52.
Fig. 7 is the cutaway view of the 4th embodiment of expression fuel supply system of the present invention.Connect the petrolift 82 of main fuel tank 33 and the fuel injection valve 91 of throttle valve body 52 sides with fuel feed pipe 88, with petrolift 94 and the fuel injection valve 91 of fuel feed pipe 98 auxiliary connection Fuel Tanks 84, in these fuel feed pipe 98 ways, be provided with check valve 146.
Check valve 146 only allows secondary fuel 91 to flow from petrolift 94 to fuel injection valve.
Fig. 8 is the cutaway view of the 5th embodiment of expression fuel supply system of the present invention.Connect the petrolift 82 of main fuel tank 33 and the fuel injection valve 91 of throttle valve body 52 sides with fuel feed pipe 88, petrolift 94 and throttle valve body 52 with fuel feed pipe 131 auxiliary connection Fuel Tanks 84, in this fuel feed pipe 131 ways, be provided with electromagnetic valve 132, be provided with throttle nozzle 148 in the end of throttle valve body 52 sides of fuel feed pipe 131.
Throttle nozzle 148 is the parts that are formed with the cutoff port that restriction secondary flow amount uses, throttle nozzle 148 is configured in the downstream of more leaning on aspirator system 46 than fuel injection valve 91, if during thus from fuel injection valve 91 main fuel injection 86 from the throttle nozzle 148 secondary fuel that drips, utilize so injected main fuel 86 can promote secondary fuel 96 to mix with giving of air, obtain stable burning.
Fig. 9 (a)～(d) is the instruction diagram (the 6th embodiment and the 7th embodiment) of the configuration of the secondary Fuel Tank among expression the present invention.
(a) be birds-eye view (the 6th embodiment), expression consist of saddle type main fuel tank 151 about among the anterior left bellying 151a and right bellying 151b, in left bellying 151a, next door 151c is set, and forms the situation of secondary Fuel Tank 152 (part of cross-hauling).
Secondary Fuel Tank 152 is configured to the front portion near body shell 11, is in particular the side near main frame 22 front portions.
(b) be the lateral plan (the 6th embodiment) of (a), be illustrated in main fuel tank 151 about the position of anterior equal height of bottom 151d of central authorities upper wall 151e is set, below this upper wall 151e and the place ahead of next door 151c form the situation of secondary Fuel Tank 152.Thereby, can effectively utilize the dead angle of the main fuel tank 151 of saddle type.
The state that secondary Fuel Tank 152 overlaps with the front portion of body shell 11 when being configured to observe from the side.
(c) be birds-eye view (the 7th embodiment), be illustrated in the main fuel tank 155 that consists of saddle type about among the anterior left bellying 155a and right bellying 155b, be formed with the to the inside recess 155c of opening at left bellying 155a, in the situation of this recess 155c configuration with the secondary Fuel Tank 156 (part of cross-hauling) of main fuel tank 155 splits.
Like this, by the secondary Fuel Tank 156 of configuration in recess 155c, secondary Fuel Tank 156 can be more not outstanding to foreign side than main fuel tank 155, can prevent the maximization of vehicle.
Secondary Fuel Tank 156 is configured to the front portion near body shell 11, is in particular the side near the front portion of main frame 22.
(d) be the lateral plan (the 7th embodiment) of the main fuel tank 155 shown in (c) and secondary Fuel Tank 156.Secondary Fuel Tank 156 for example is configured in the bottom 155d position more on the lower than central authorities about main fuel tank 155.Thereby, can effectively utilize the dead angle of the main fuel tank 155 of saddle type.
Secondary Fuel Tank 156 is configured to the front portion near body shell 11, is in particular the side near the front portion of main frame 22.
The state that secondary Fuel Tank 156 overlaps with the front portion of body shell 11 when being configured to observe from the side.
Figure 10 is the cutaway view of the 8th embodiment of fuel supply system of the present invention.At the bottom of main fuel tank 161 161a petrolift 82 is installed, at these petrolift 82 interior filters 162 that arrange No. 1 time, by fuel feed pipe 163 No. 2 filters 164 are connected to petrolift 82, by fuel feed pipe 167 fuel injection valve 91 of throttle valve body 52 sides is connected to the boiler check valve 166 of installing at these No. 2 filters 164, fuel returns pipe arrangement 169 and extends in the main fuel tank 161 from the pressure regulator 168 of installing at No. 2 filters 164.
Boiler check valve 166 only allows the fuel flow from No. 2 filters 164 to fuel injection valve 91.
Pressure regulator 168 has following functions: in the situation that fuel injection valve 91 does not spray, make main fuel 86 return pipe arrangement 169 by fuel and flow in the main fuel tank 161, prevent that thus the ejection of petrolift 82 from pressing too high.
Since the mesh of No. 1 filter 162 than No. 2 filters 164 slightly, so mesh should not stop up, thereby can prolong the replacement cycle, and can keep for a long time the discharge performance of petrolift 82.Because No. 2 filters 164 are to dispose respectively and be configured in the outside with petrolift 82, so change easily.
And, in the bottom of the oil-feed port 161b of main fuel tank 161 secondary Fuel Tank 171 being set, fuel feed pipe 172 extends downwards from this pair Fuel Tank 171, and the leading section of this fuel feed pipe 172 is inserted in the buoyancy tank 173 of the bottom that is arranged on throttle valve body 52.
Have in buoyancy tank 173 internal configurations: the fuel induction pipe 176 of upper downward-extension, the throttle nozzle 178 that is connected with the front end of this fuel induction pipe 176 by electromagnetic valve 177, float on buoyancy aid 181 in the secondary fuel 96, be installed in the needle-valve 183 of this buoyancy aid 181 by supporting slice 182.The front end of throttle nozzle 178 is projected in the throttle valve body 52, and needle-valve 183 is configured in the fuel feed pipe 172 and with respect to the front end of fuel feed pipe 172 and can advances and retreat.
If the secondary fuel 96 in the buoyancy tank 173 reduces to specified amount, then needle-valve 183 withdraws from from the front end of fuel feed pipe 172, thereby secondary fuel 96 flows in the buoyancy tank 173 from fuel feed pipe 172, if the secondary fuel 96 in the buoyancy tank 173 is stored into specified amount, then needle-valve 183 will insert the front end of fuel feed pipe 172, thereby the front end of fuel feed pipe 172 is closed by needle-valve 183, and secondary fuel 96 stops from the outflow of fuel feed pipe 172.
When electromagnetic valve 177 energisings were opened, secondary fuel 96 was injected in the throttle valve body 52 by fuel induction pipe 172, electromagnetic valve 177 and throttle nozzle 178.
Figure 11 is the cutaway view of the 9th embodiment of fuel supply system of the present invention.Fuel feed pipe 186 extends downwards from the secondary Fuel Tank 171 of the configuration of the top in main fuel tank 161, the leading section of this fuel feed pipe 186 is connected with throttle nozzle 148 on being installed on aspirate tube 51, is provided with unidirectional oil pump 187 in fuel feed pipe 186 ways.
Unidirectional oil pump 187 is that secondary fuel 96 makes secondary fuel from the parts of throttle nozzle 148 forced jet by M/C or automatic operation during only from secondary Fuel Tank 171 to throttle nozzle 148 side flow.
Figure 12 is the cutaway view of the 10th embodiment of fuel supply system of the present invention.Fuel feed pipe 191 from the secondary Fuel Tank 171 of the top in main fuel tank 161 configuration extend to petrolift 82 near, the front-end configuration of fuel feed pipe 191 is provided with unidirectional oil pump 187 in fuel feed pipe 191 ways around the fuel suction port of petrolift 82.
During engine starting by operation sheet to oil pump 187, attract secondary fuel 96 in the secondary Fuel Tank 171 from the fuel suction port of petrolift 82, sprayed by fuel injection valve 91 by No. 2 filters 164, thus at the combustion chamber of driving engine, secondary fuel 96 has improved the startability of driving engine with main fuel 86 burnings.
Figure 13 is the cutaway view of the 11st embodiment of fuel supply system of the present invention.The bottom 191a of the secondary Fuel Tank 191 of installing in the bottom of the oil-feed port 190a of main fuel tank 190 is higher than the lower end 190b of the oil-feed port 190a of main fuel tank 190, fuel feed pipe 193 from secondary Fuel Tank 191 extend to petrolift 82 near, the front-end configuration of fuel feed pipe 193 is provided with fuel valve 194 in fuel feed pipe 193 ways around the fuel suction port of petrolift 82.
Even fill with main fuel tank 190 and reach in the situation of lower end 190b of oil-feed port 190a at main fuel 86, compare with the drop H1 between the front end 193a of the liquid level 86a of main fuel 86 and fuel feed pipe 193, drop H2 between the bottom 191a of secondary Fuel Tank 191 and the front end 193a of fuel feed pipe 193 is larger, therefore when fuel valve 194 is opened, can always make secondary fuel in the secondary Fuel Tank 171 from the front end 191a ejection of fuel feed pipe 191.Thereby, can secondary fuel 96 be sucked with main fuel 86 from the fuel suction port of petrolift 82, and can spray from fuel injection valve 91 by No. 2 filters 164.
Figure 14 is the cutaway view of the 12nd embodiment of fuel supply system of the present invention.Fuel feed pipe 186 extends downwards from the secondary Fuel Tank 171 of the configuration of the top in main fuel tank 161, the leading section of this fuel feed pipe 186 is connected with the throttle nozzle 148 that is installed on aspirate tube 51, and the flowing time that is provided with in fuel feed pipe 186 secondary fuel 96 is the electromagnetic valve 211 that fuel flow is controlled.
The emitted dose of the main fuel 86 that is produced by fuel injection valve 91 is controlled based on engine revolution, intake negative-pressure, throttle opening, EGO2 Exhaust Gas Oxygen concentration, suction temperature, engine temperature by ECU (control unit of engine).
And, ECU according to EGO2 Exhaust Gas Oxygen concentration prediction E concentration (alcohol concentration) thus learn the fuel flow that is produced by electromagnetic valve 211, and control described fuel flow based on this E concentration, suction temperature, engine temperature.
Particularly, the driving engine of alcoholic strength high (E100MAP state) is at the regular-grade gasoline (E22) that blows out necessary amount under the cold machine state and when low temperature (below 15 ℃) in inlet manifold's (aspirate tube 51).
Such as above Fig. 2, shown in Figure 3, the 1st technical scheme of the present invention is: in a kind of vehicle 10 (with reference to Fig. 1), except the main fuel tank 33 of mobile engine 12, also has the secondary Fuel Tank 84 that will store as secondary fuel 96 with fuel for the startup of raising startability, wherein, secondary Fuel Tank 84 is configured in the main fuel tank 33.
Thus, can effectively utilize the space in the main fuel tank 33, and the structure of main fuel tank 33 and secondary Fuel Tank 84 will become simply, can prevent the maximization of vehicle 10.For example, if the bottom of a side (that is, right bellying 102) arranges secondary Fuel Tank 84 about main fuel tank 33, then can effectively utilize the dead angle of main fuel tank 33.
The 2nd technical scheme of the present invention, shown in Fig. 2, Fig. 4 (a), (b), the oil-feed port 106 of secondary Fuel Tank 84 is arranged on the inboard of the oil-feed port 83 of main fuel tank 33.
Thus, can realize the simplification of oil-feed port 83 structures.And, can make the oil-feed port 83 of main fuel tank 33 close to each other with the oil-feed port 106 of secondary Fuel Tank 84, can carry out expeditiously fuel feeding work.
In the 3rd technical scheme of the present invention, be provided with the tegillum section 129 that the oil-feed port 106 of secondary Fuel Tank 84 is clogged in the inboard as the cover cap 118 of the lid of the oil-feed port 83 of main fuel tank 33.
Thus, can easily carry out 2 oil-feed ports 82,106 switching, and, during for the pastas such as the inclination change of vehicle body, can prevent that main fuel 86 and the secondary Fuel Tank 84 interior secondary fuel 96 in the main fuel tank 33 from mixing.
The 4th technical scheme of the present invention, shown in Fig. 9 (a)～(d), in a kind of vehicle 10 (Fig. 1 reference), except the main fuel tank 151,155 of engine for motorcycle 12 (with reference to Fig. 1), also has the secondary Fuel Tank 152,156 that will store for the secondary fuel 96 (with reference to Fig. 2) of raising startability, wherein, secondary Fuel Tank 152,156 be configured in main fuel tank 151, near single ridge skeleton forms 155, vehicle front side main frame 22 around.
Thus, can more close main fuel tank 151,155 ground dispose secondary Fuel Tank 152,156, thereby can prevent the maximization of vehicle 10.
The 5th technical scheme of the present invention as shown in figure 10, extends to the aspirator system 46 of below and is attached thereto as the fuel feed pipe 172 of the fuel distribution tube of drawing from secondary Fuel Tank 171.
Thus, the fuel feed pipe 172 of drawing from secondary Fuel Tank 171 can be too not crooked, thereby can improve air flow property, and, owing to can utilize the drop of secondary fuel 96, so supply with secondary fuel 96 to aspirator system 46 easily, can improve the startability of driving engine 12.
The 6th technical scheme of the present invention, as shown in Figure 5, the fuel feed pipe 131 as the fuel distribution tube of drawing from secondary Fuel Tank 84, be provided with: the electromagnetic valve 132 that the flowing time of secondary fuel 96 is controlled, and only allow secondary fuel 96 from these electromagnetic valve 132 side direction aspirator systems 46 sides, be specially to the boiler check valve 133 of throttle valve body 52 side flow.
Thus, can easily control by electromagnetic valve 132 delivery volume of the secondary fuel that flows to throttle valve body 52.And, utilize boiler check valve 133 can prevent that secondary fuel is from throttle valve body 52 to secondary Fuel Tank 84 side adverse currents.
The 7th technical scheme of the present invention, as shown in Figure 7, in secondary Fuel Tank 84, petrolift 94 is set, the ejection pressure of the petrolift 82 of ejection pressure ratio main fuel tank 33 usefulness of this petrolift 94 is high, and make fuel feed pipe 98 from petrolift 94, be connected to main fuel tank 33 usefulness fuel injection valves 91 by check valve 146.
Thus, can at main fuel tank 33 1 sides and secondary Fuel Tank 84 1 side common fuel shooting valves 91, reduce number of components, thereby can reduce cost.
Industrial applicibility
Fuel feed device for engine of the present invention is applicable to motor bike.

Claims (4)

1. fuel feed device for engine, be used for two-wheeled motor vehicle, this two-wheeled motor vehicle is except the main fuel tank with engine for motorcycle, also has the secondary Fuel Tank that the startup that is used for the raising startability is got up with fuel storage, it is characterized in that, described secondary Fuel Tank is configured in the main fuel tank bellying, this main fuel tank bellying is positioned at around near the main frame of described main fuel tank single ridge skeleton form, vehicle front side, and described secondary Fuel Tank is formed by wall and the next door of described main fuel tank bellying.
2. fuel feed device for engine according to claim 1 is characterized in that, the fuel distribution tube of drawing from described secondary Fuel Tank extends to the aspirator system of below and is attached thereto.
3. fuel feed device for engine according to claim 2, it is characterized in that, be provided with at the fuel distribution tube of drawing from described secondary Fuel Tank: the electromagnetic valve that the flowing time of fuel is controlled and only allow fuel from the boiler check valve of the described aspirator system side flow of this electromagnetic valve side direction.
4. fuel feed device for engine according to claim 2, it is characterized in that, in described fuel distribution tube way, be provided with secondary petrolift, the ejection pressure of the main fuel pump that the described main fuel tank of ejection pressure ratio of this pair petrolift is used is high, and makes this pair petrolift be connected to the upstream side fuel passage that main fuel tank is used fuel injection valve by check valve.
CN2012104285487A 2007-02-14 2008-01-29 Fuel feeder for engine Pending CN102922988A (en)

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JP2007034149A JP4914737B2 (en) 2007-02-14 2007-02-14 Engine fuel supply system

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JP5894823B2 (en) * 2012-03-19 2016-03-30 本田技研工業株式会社 Fuel supply structure for vehicles
CN111886153A (en) * 2018-02-20 2020-11-03 印度商宜诺摩托克普有限公司 Fuel storage system

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CN101244689B (en) 2013-03-06
BRPI0800126B1 (en) 2018-11-27
BRPI0800126A8 (en) 2018-09-11
CN101244689A (en) 2008-08-20
BRPI0800126A2 (en) 2009-09-29
JP4914737B2 (en) 2012-04-11

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Application publication date: 20130213